Verizon Business, Level 3, and XO all notify us of possible fraud on International calls, but I don't think they monitor for fraud on domestic calls. -----Original Message----- From: voiceops-bounces at voiceops.org [mailto:voiceops-bounces at voiceops.org] On Behalf Of Mark Kent Sent: Monday, May 14, 2012 12:34 PM To: voiceops at voiceops.org Subject: [VoiceOps] fraud protection Hello, We just had an unfortunate compromise and racked up a large amount of calls in a 12 hour period. The attack seems to be for financial gain in that the most frequent destination is a conference call service in Poland, that possibly keeps calls open waiting for a PIN to be entered. Is there any basis for expecting that the upstream carrier should have some protections that would limit our liability? Thanks, -mark P.S. For those people who feel compelled to point out that we should have (better) protection on our end: Yes, Thank you, message received! _______________________________________________ VoiceOps mailing list VoiceOps at voiceops.org https://puck.nether.net/mailman/listinfo/voiceops